Sublimation printing on mugs is one of the most popular and profitable products in personalised gifting. Whether you're running a print business, just starting out, or looking to improve your results, this guide covers everything you need to know — from the basic process through to troubleshooting common problems.
What You'll Need
Before you start, make sure you have the following:
- A sublimation printer loaded with sublimation ink cartridges
- Sublimation transfer paper
- Heat-resistant tape
- A coated sublimation mug — either ceramic or polymer
- A mug press
- Heat-resistant gloves
The mug is the most important variable here. Only mugs with a specialist sublimation coating will accept the ink transfer — standard mugs from a supermarket or homeware store will not work, regardless of how good your printer or press is.
Ceramic vs Polymer Mugs — Which Should You Use?
This is the question most beginners don't think to ask until something goes wrong. The two most common mug types used in sublimation printing behave differently, and using the wrong settings for the wrong mug is one of the most common causes of poor results.
Ceramic sublimation mugs are the most widely used format. The classic 11oz white ceramic mug is the industry standard — familiar, affordable, and universally popular as a personalised gift. Ceramic mugs require higher temperatures and longer press times than polymer mugs, but produce sharp, vivid results with excellent durability.
Polymer sublimation mugs are made from a lightweight plastic material, making them shatter-resistant and safer for children or outdoor use. They require lower temperatures than ceramic and are particularly popular for school and nursery products. The print quality is excellent — often producing even more vibrant colours than ceramic due to the way the polymer material absorbs the ink.
Typical settings:
| Mug Type | Temperature | Time |
|---|---|---|
| Ceramic (11oz) | 185–195°C | 3–4 minutes |
| Ceramic (15oz) | 185–195°C | 4–5 minutes |
| Polymer | 170–180°C | 2.5–3.5 minutes |
Always check the manufacturer's recommended settings for your specific mug as these can vary slightly between suppliers.
Step-by-Step: How to Print on a Sublimation Mug
Step 1 — Design Your Artwork
Create or upload your design using graphic design software such as Adobe Illustrator, Photoshop, CorelDRAW, or free tools like Canva or Inkscape. A few things to bear in mind:
- Use high resolution artwork — at least 150dpi at print size, ideally 300dpi
- Set your image to mirror mode before printing — this is essential. If you forget this step your design will print backwards on the mug
- Check your mug template dimensions — an 11oz mug typically prints at around 20cm wide x 8.5cm tall. Make sure your artwork fits the printable area
Step 2 — Print Your Transfer
Load your sublimation paper into your sublimation printer with the coated side facing the correct direction for your printer model. Print your mirrored design using sublimation inks.
Once printed, handle the transfer carefully — avoid touching the printed surface with bare fingers as oils from your skin can affect the transfer quality.
Step 3 — Prepare the Mug
Clean your mug thoroughly with a lint-free cloth to remove any dust, fingerprints, or grease. Even small amounts of contamination on the surface can cause spotting or uneven transfer.
Wrap the printed transfer paper around the mug with the image facing inward against the mug surface. Pull it tight and smooth to avoid any air pockets or creases — these will show up as blurry or distorted areas in the finished print. Secure firmly with heat-resistant tape, paying particular attention to the edges of the paper.
Step 4 — Preheat Your Mug Press
Preheat your mug press to the appropriate temperature for your mug type (see the table above). Allow the press to reach full temperature before placing the mug — pressing at the wrong temperature is one of the most common causes of faded or washed-out results.
Step 5 — Press the Mug
Place the mug in the press, making sure the transfer paper is positioned correctly and the mug is centred. Apply firm, even pressure using the pressure handle — too little pressure is a common cause of ghosting (see troubleshooting below).
Set your timer and press for the recommended time. Do not open the press early.
Step 6 — Remove and Cool
Wearing heat-resistant gloves, carefully remove the mug from the press and place it on a heat-resistant surface. Remove the transfer paper immediately while the mug is still hot — leaving it on as the mug cools can cause the image to ghost or smear as the sublimation gases re-release.
Peel from one corner in a single smooth motion. The design should be vivid and permanent.
Common Mistakes and How to Avoid Them
Even experienced printers run into problems. Here are the most common issues and what causes them:
Faded or washed-out print Usually caused by too low a temperature, too short a press time, or insufficient pressure. Check your settings against the recommended values for your specific mug and press.
Ghosting (blurry double image) Caused by movement of the transfer paper during or after pressing. Make sure the paper is taped down firmly on all sides, and remove it immediately when the press opens — don't let the mug sit with the paper on.
Uneven colour across the mug Usually a pressure issue — the press isn't making even contact with the mug surface. Check the press is properly adjusted for your mug diameter. Different mug sizes and shapes require different pressure settings.
Colour looks different from screen Sublimation colours always look more muted on the printed transfer than on screen. The colours will intensify significantly during pressing. If your finished mug colours still look off, check your printer's ICC colour profile settings.
White spots or blotches Usually caused by contamination on the mug surface before pressing. Clean the mug thoroughly and make sure it is completely dry before wrapping the transfer.
Ink bleeding at the edges The transfer paper has shifted during pressing, or the paper wasn't pulled tight enough before taping. Make sure the paper is smooth and taut with no wrinkles before pressing.
Which Mug Press Do You Need?
For most print businesses, a dedicated cylindrical mug press is essential for consistent, professional results. Flat heat presses are not suitable for mugs — they can't make even contact with a curved surface. A good entry-level mug press like the Craft Express Hobby Mug Press is designed specifically for 11oz mugs and delivers consistent, repeatable results that a flat press simply cannot match.
If you're pressing at volume, look at presses that handle multiple mug sizes — 11oz, 15oz, and travel mugs — so you're not restricted to a single format.
Getting Your Supplies Right
The quality of your finished print is only as good as the materials you use. Cheap sublimation paper, expired inks, or uncoated mugs are the most common cause of disappointing results — not the printer or press.
At Longforte we stock a full range of sublimation mugs, sublimation paper, and sublimation inks for print businesses at all levels. All our mugs are coated specifically for sublimation printing and tested for consistent coating quality across batches.